Download Charger Socket Module

Charger Socket Module
DX-ACC3
INSTALLATION MANUAL
Information in this document is subject to change without notice and does not
represent a commitment on the part of Dynamic Controls. No part of this manual
may be reproduced or transmitted in any form, or by any means, electronic or
mechanical, including photocopying or recording, for any purpose without the
written permission of Dynamic Controls.
Copyright 1998 by Dynamic Controls. All rights reserved.
Part Number
Version 2.0
GBK59697
(European Reference No. GBK9997)
March 2003
Dynamic and DX are trademarks of Dynamic Controls
DX Charger Socket Module, March 2003
1
Introduction
The Charger Socket Module is suitable for use in any DX system. It can be used
where there is no existing charging facility, or as a convenient option for users
who have difficulty accessing another charger socket present elsewhere in the
system. Note only one charger socket should be used at any one time.
The Charger Socket Module is to be used for 24 volt battery chargers, up to a
maximum of 8 amps peak current.
Warning Chargers can be rated either by ‘peak current’, or ‘root mean square
(RMS)’. A charger rated at 8amps RMS may be capable of supplying up to 14
amps peak current, and may not be compatible with the Charger Socket Module.
Contact your battery charger manufacturer for more information.
Dynamic Controls welcomes feedback from its customers on its products
and documentation. If you would like to comment on this manual or the
product it describes, please contact us at any of the addresses at the back on
this manual or by email at:
[email protected]
Intended Use Statement
The DX-ACC3 is an accessory of the DX System intended to allow convenient
connection of 24V battery chargers of charging current up to 8 Amps. Intended
for use with DX Master Remotes that do not have a charging socket (e.g. Tray
Remote or Chin Remote), it may also be used as an alternative to the charging
socket on a DX Master Remote.
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DX Charger Socket Module, March 2003
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Installation
The Charger Socket Module is to be installed in a system already comprising a
DX Power Module, and DX Master Remote.
The Charger Socket should be
securely fitted in a position that
is easily accessible to the chair
DX MASTER REMOTE
user, or person connecting the
charger. The selected position
and orientation should also give
CHARGER
maximum mechanical and
SOCKET
environmental protection. Avoid
MODULE
DX POWER MODULE
positions in which the module
or its wiring can be knocked or
physically damaged or those which are exposed to splashing and/or other forms of
abuse.
64mm
42mm
21mm
42mm
Once fastened to the wheelchair, and with the
system turned off, connect directly to the
Power Module, as illustrated above. This will
ensure the Charger Socket Module is
electrically connected as close to the batteries
as possible, and avoid charging problems that
can result from voltage drops due to lengthy
connecting wires.
Warning: Do not use the frame of a wheelchair or scooter as the earth return for
any lights or actuators. Making any low resistance connection to the frame is
regarded as a possible safety hazard and not allowed by international performance
and safety standards for wheelchairs and scooters.
Ensure that all wiring is suitably restrained and of such a length that it is
physically impossible to connect the motor directly to the battery.
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DX Charger Socket Module, March 2003
3
Battery Charging
The satisfactory performance of the DX system is critically dependant on the type
and state of the batteries. The battery charger used must be correctly selected and
adjusted according to the battery manufacturers instructions. Failure to do so may
damage or destroy the batteries, give poor range, or be potentially dangerous.
Batteries should not be abused (for example by deep discharge or overcharging),
and must be operated, maintained and charged according to manufacturer’s
instructions.
A warning from the DX Master Remote will alert the user when the wheelchair
needs charging. When this occurs the user should look to charge as soon as
possible. Note that around this time a loss of performance will occur, due to the
low charge, and battery saver feature managing the amount of power available.
This feature is designed to prevent over discharge, and so contribute towards
extending battery life, as well as maximise the range under ‘reserve charge’.
The charger socket itself is a 3 pin XLR type with pin configurations as shown
below. Ensure that the charger used is compatible with this configuration before
connection. Charger plugs suitable for connecting battery chargers to all Dynamic
wheelchairs and scooters are available from Dynamic, quoting part number
GCN0309.
The safety link between B- and the Inhibit Pin must be fitted so that the
wheelchair is prevented from driving while the batteries are being charged. The
middle ‘bar’ of the seven segment display, as found on most Master Remotes, is
used to indicate that the wheelchair cannot be used.
Battery Charger Socket
(Front view)
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DX Charger Socket Module, March 2003
Important If connecting the charger wakes up the DX system (even if initially
turned off), leave it turned on. This allows the charging progress to be monitored
by the Power Module, and ensures battery gauge accuracy. Later versions of the
Master Remote do not wake up.
Warning Do not disconnect batteries or open circuit the circuit breaker during
charging.
Important Charging is completed only when indicated by the battery charger.
Do not confuse indication from the battery charger with the DX Master Remote
fuel gauge, if fitted. The DX Master Remote fuel gauge is designed to show
capacity while driving, not during charging.
On occasions during and after charging, the DX Master Remote fuel gauge (if
fitted) may be seen to flash. This will occur when
•
•
•
•
The wheelchair is on charge, and the batteries are nearing full capacity
The batteries are overcharged
The wheelchair is travelling down a slope and the batteries are full
The batteries are faulty
This warning will reset automatically as the voltage drops. Contact Dynamic if
flashing persists.
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DX Charger Socket Module, March 2003
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Safety
Users and Suppliers of Assistive Mobility products should give consideration to
the possibility of a failure to operate, or an incorrect operation, by the product.
Should an operator be left with limited or no mobility due to an equipment failure,
they should still be able to summon assistance from where ever they may be.
A warning must be conveyed to the operator that they have the responsibility to
ensure that the vehicle is kept in a good safe operating condition, and ensure that
components, such as cables, are protected from damage by securing them in
optimum positions.
All vehicle components should be regularly checked for loose, damaged or
corroded connectors, terminals, or cabling. All cables should be restrained to
protect them from damage. Damaged components should be replaced.
The user must turn the system off while getting in and out of the wheelchair.
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DX Charger Socket Module, March 2003
5
Electromagnetic Compatibility (EMC)
Dynamic Electronic Controllers have been tested on typical vehicles to
confirm compliance with the following EMC standards:
Emissions:
CISPR22, class B
Susceptibility: IEC1000-4-3
ESD:
IEC1000-4-2
Compliance levels and set-up as per ISO 7176, part 21.
National and international directives require confirmation of compliance on
particular vehicles. Since EMC is dependant on the particular installation,
each variation must be tested. The guidelines in this section are written to
assist with meeting EMC requirements.
Minimising Emissions
Motors:
Motor brushes generate electromagnetic emissions. It may
be necessary to fit capacitors between the brush holders and
the motor case. Ensure the leads are kept as short as
possible. A suitable capacitor is 4n7, 250V Ceramic.
Wiring:
Keep wire lengths as short as practical for a tidy layout.
Minimise any wire loops, particularly loops of single wires
as opposed to wire return pairs.
Endeavour to run wires as send and return pairs.
Where practical, attach cables to wheelchair frame.
Immunity to Radiated Fields
Follow the wiring recommendations for minimising emissions.
Immunity to ESD
Follow the wiring recommendations for minimising emissions.
Ensure all vehicle sub-frames and modules are electrically connected.
Ensure any metal casing on speed setting potentiometers is electrically
connected to the vehicle frame.
Do not leave connection points unnecessarily exposed.
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DX Charger Socket Module, March 2003
6
International Standards
Dynamic Controls products built today allow our customers' vehicles to conform
to national and international requirements. In particular to:
ISO7176-9
ISO7176-14
ISO7176-21
- Climatic Tests for Electric Wheelchairs
- Power and Control Systems for Electric Wheelchairs
- Requirements and test Methods for Electromagnetic
Compatibility of Electric Powered Wheelchairs and
Scooters.
However the performance of controllers fitted to wheelchairs and scooters is very
dependent on the design of the scooter or wheelchair so final compliance must be
obtained by the vehicle manufacturer for their particular vehicle. No component
compliance certificate issued by Dynamic Controls relieves a wheelchair/scooter
manufacturer from compliance testing their particular vehicles.
User manuals should contain EMC warnings along the following lines:
Most electronic equipment is influenced by Radio Frequency
Interference (RFI). Caution should be exercised with regard to the use
of portable communications equipment in the area around such
equipment. While the manufacturer has made every effort to ensure
that RFI does not cause problems, very strong signals could still cause
a problem. If RFI causes erratic behaviour, shut the wheelchair off
immediately. Leave off while transmission is in progress.
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DX Charger Socket Module, March 2003
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Miscellaneous
This manual must be read in conjunction with the installation manuals for all other
DX Modules to be used in your application. Heed all safety and misuse warnings
and if in doubt ask for advice.
For further information and assistance, including Sales and Servicing, contact
Dynamic.
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